Greetings to the time nuts,
I recently purchased this counter from Ebay. I don't have any connection
with the seller. It looks brand new. It is the only HP item that I now
have that is in current production.
Ebay Item: 271777486308
Keep the time,
Gordon WA4FJC
Probably the units in
Chuck,
I'm going to send you off list the 1992-02M manual which contains the
MATE/CIIL military commands. I don't remember where I got this manual from.
Anybody else interested please ask.
Antonio I8IOV
I take it you have documentation on the Air Force commands
used with the 1992. Where did
I' ve used for a while a National Instruments RS232-GPIB converter with my two
1992s using the military language. I wrote my programs myself in QuickBasic
under MS-DOS on a laptop. The whole thing worked quite well. Indeed I had a
vague info that the counter could be switched to standard GPIB
Hi,I would like to modify my profile, but I've lost the password. I have done
the password remind procedure, but it didn't work, no email received. Any help
please?Thanks,Antonio Iovane
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On Tue, Sep 9, 2014 at 4:26 AM, Azelio Boriani azelio.bori...@screen.it
wrote:
Take a look at this patent
http://www.google.com/patents/US20130342278 and you will learn how
to build the ultimate time and frequency reference.
The patent's owners don't appear to be very trustful in their idea,
Da: t...@leapsecond.com
Data: 01/05/2014 8.07
Hi Antonio,
At some level, frequency standards are all affected by every environmental
factor
Tom,
thanks for your comments.
There is some geomagnetic activity today May 8, see http://www.swpc.noaa.
gov/rt_plots/satenv.html (GOES Hp and
Hi all,thanks for your replies.Geomagnetic storms are known to produce easily
detectable effects at earth, sometimes dramatic (
http://en.wikipedia.org/wiki/Solar_storm_of_1859 ,
http://www.youtube.com/watch?v=7ukQhycKOFw ), sometimes serious (compasses get
crazy), sometimes minor (only
As our geomagnetic field gets quite noisy during geomagnetic storms (which are
connected to solar activity), I was wondering if this could affect phase noise
of oscillators. I see that theoretically it could. Has anybody ever measured
phase noise increments which could be explained this
For digital clocks with analog hands, a 1sec pulse is easily detected by an
electric guitar pick-up. The pulse is the one fed to the stepping motor. I
noticed this while playing (I wear the watch on my right arm). Antonio I8IOV
Da: n1...@dartmouth.edu
Data: 19/04/2014 6.00
I have done that as
Seehttp://www.spaceweather.com/ Antonio I8IOV
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Da: rmon...@bigpond.net.au
Data: 23/03/2014 10.58
For info MH370 did transmit ADS-B signals up to 17:21 UTC on 7 March when it
seems it was either switched off or disabled. You can still see the track
it took up to this time using the playback facility on Flight Radar 24 by
say starting at
Those who say the missing aircraft should be searched along the two corridors,
what measurement are they relying on? I think it is a one-way measurement of
time-stamped pings, which implies good synchronization of clocks between a
geosynchronous satellite and a moving aircraft. Antonio I8IOV
projects a circle on the Earth. The maximum flying range of the
plane determined the ends of the NE and SE arcs of that circle.
The news only gets stranger as time goes on.
Bill Hawkins
-Original Message-
From: iov...@inwind.it
Sent: Wednesday, March 19, 2014 6:46 PM
Those who say
determined the ends of the NE and SE arcs of that circle.
The news only gets stranger as time goes on.
Bill Hawkins
-Original Message-
From: iov...@inwind.it
Sent: Wednesday, March 19, 2014 6:46 PM
Those who say the missing aircraft should be searched along the two
corridors, what measurement
I had five 5328A, three military and two normal, and still own three. The fan
runs whenever the unit is turned on and never stops. In the military version
the fan is much noisy.
Antonio I8IOV
Da: bre...@gmail.com
Data: 18/01/2014 0.03
A: time-nuts@febo.com
Ogg: [time-nuts] HP 5328A fan -
Did anybody notice any EFC glitches on Nov 3 (solar eclipse day)
?Thanks,Antonio I8IOV
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Looking at fig. 4 at
http://arxiv.org/PS_cache/physics/pdf/0608/0608205v1.pdf
I still doubt that the De Witte results would be so simply dismissed.
The experiment started on early June and ended on late November, and the
temperature cycle over such a period is not a ramp, still having to cross
I would add that one could run the experiment over a full year.
Antonio I8IOV
I wrote:
Looking at fig. 4 at
http://arxiv.org/PS_cache/physics/pdf/0608/0608205v1.pdf
I still doubt that the De Witte results would be so simply dismissed.
The experiment started on early June and ended on late
li...@rtty.us wrote:
The main questions on the lockup sweep is going to be:
1) does it make it to / past the right frequency?
2) how soon after it does get there, does it lock up?
It crosses the right frequency a few times until lockup, in both directions.
According to my experience, typical
Further, the strangest case I had to deal with was a correct voltage sweep at
the monitor output but wrong voltage at the varactor: the issue was a leaking
capacitor between the above voltage rail and ground, namely C406.
Antonio I8IOV
li...@rtty.us wrote:
The main questions on the lockup
Well, I believed to be answering questions from the original poster, not to
questions that indeed are troubleshotting advices. Sorry
Antonio
Further, the strangest case I had to deal with was a correct voltage sweep
at
the monitor output but wrong voltage at the varactor: the issue was a
Does anybody have direct experience on playing with YIG oscillators? I have
read some specs on drift, but I know they are usually worst cases. I would like
to get a raw idea about real measured drifts in reasonably stable temperature
for a free running YIG with no tuning current. Yes, of course
I do not have any data on temperature drift, but I can say that most YIG
oscillators I have used, with the exception of the Stellex-mini models, have
required a tuning current to oscillate. The Stellex-mini models have a
strong bias magnet which allows the tuning current to be zero at mid
Yes, something must supply the minimum magnetic field to activate the
oscillator - but the current determines the field, so it's
necessarily part of the drift characteristic. It also depends on
whether the YIG sphere is heated - usually to 80 deg C or so, to help
stabilize it.
Without any
Might be of interest in Europe: 300799372060It's mine.Antonio I8IOV
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, but the clocks were at the same location.
What is new with this test is that it involves a GPSDO and hence a virtual
clock elsewhere.
Antonio I8IOV
On Mon, Sep 3, 2012 at 9:16 PM, iov...@inwind.it iov...@inwind.it wrote:
Dear time-nuts,
a friend of mine, Prof. Alexander Pugach (1), did an experiment
I can confirm what Bob wrote.
From my log, these are the Lamp V of my 9 working LPROs:
8.25
5.18
7.74
6.54
6.5
7
6
6.5
7
The one that gives 5.18V seems to have some problem with the capacitive
trimmer near the lamp.
Antonio I8IOV
Bob wrote:
6.0 to 7.0 volts is a *very* typical lamp voltage
Recently I bought for cheap a nice looking latest production but not working
5370B. It turned out to be missing the 10811, its power supply card, and the
relay. I borrowed these parts from my 5370A, and the 5370B worked fine. For
some reasons today I've been swapping OCXO's between various
alanh...@gmail.com wrote:
My 5334A Service Manual for SERIAL NUMBER PREFIX: 2426A lists the following
battery;
Reference Designation - BT1
HP Part Number - 1420-0268
Description - Battery 3.6V .065A-HR NI-CD
Mfr Code - 28480 (which is Hewlett-Packard)
Mfr Part Number - 1420-0268
I haven't
Thanks all for the advices, by which I'm now oriented towards a cordless phone
battery pack.
Antonio I8IOV
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Hi all,
I have to replace the memory back-up battery on a 5334a counter. Today I've
found it leaked causing some corrosion on the pcb. Does anybody know what kind
of battery is it? I don't have the service manual.
Thanks,
Antonio I8IOV
___
time-nuts
Already done. The 5334B doesn't have any back-up battery. My counter is the
5334A. Thanks
azelio.boriani wrote
Try this
http://www.ko4bb.
com/Manuals/HP_Agilent/HP_5334_Universal_Counter/HP_5334B_Service_Manual_Nov-
1991.pdf
On Wed, May 2, 2012 at 11:51 PM, iov...@inwind.it iov
Just found on the auction site:
Item number: 220957196441
Specs available at the manufacturer's website.
I have no idea if it is worth the price.
Might be of interest.
Antonio I8IOV
Note: I'm not affiliated.. etc ...etc..
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Personally I'm sorry about such an end of the story.
Antonio I8IOV
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May anybody out there explain why the connector was simply photographed, and
not put in place, on October 13, that is one month before the updated version
(Nov 17) of the Opera paper?
Antonio I8IOV
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To
batchelo...@yahoo.com wrote
Well the best reason is that by our social convention it makes people
comfortable.
But that reason does have much logic behind it.
One month ago a 38-year old wristwatch resurfaced from a junk box and I
decided to return to it at least temporarily. It drifts some
Ogg: [time-nuts] military frequency standard pin out??
Paul A. Cianciolo paulc at snet.net
The cover has the layout of the parts. The connector has 6 coax outputs
into a D type connector.
+
It sounds like the R-1051/URR receiver frequency standard. There is some info
Da: b...@lysator.liu.se
Data: 24/02/2012 14.42
A: Discussion of precise time and frequency measurementtime-nuts@febo.com
Is it known which GPS receiver type was used in the Neutrino experiment?
It was a Septentrio PolaRx2e. See the paper on setup and procedures:
I read that the news came from sources familiar with the experiment. Is there
any official press release? Or only rumors?
Antonio I8IOV
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I would disagree. The traffic on the FE-5680A took some of the group's
bandwidth only in the recent weeks in coincidence with the appearance of cheap
units on the auction site. Why to force time-nuts to jump to and fro one group
and another?
I have only been a member of the time-nuts group for
Is anyone prepared to comment on the relative performance of the FE-5680A
compared with the LPROs?
Bruce Hunter, KG6OJI
I would be interested in such comments too. I judiciously refrained myself
from buying an FE-5680A because I own nine LPROs.
Antonio I8IOV
On Jan 8 2012 14:02 javier.serrano.par...@gmail.com wrote:
Tom Van Baak t...@leapsecond.com wrote:
Hopefully all this GPS-neutrino talk will calm down when other methods
to validate the synchronization of the clocks at CERN and LNGS are
done (e.g., direct fiber or traveling Cs clocks).
So far it seemed to me that the overall standpoint of the authoritative time-
nuts list is that the GPS timing and geografical survey of the OPERA experiment
are good (and hence experimental errors or artifacts, if any, should be
searched for elsewhere).
I myself, not being a deep GPS expert,
from a
cold start. Mine moved 40 points in two hours from standby. I think I
have some testing to do.
Thanks,
Ed
On 12/18/2011 6:01 PM, iov...@inwind.it wrote:
As a contribution to this discussion, I attach a 17-day trace recorded with
one
of my 1992s on Feb 2008. The counter was counting
My mistake:
I wrote:
(peaks = PC has been turned on, dips = PC has been turned off).
Please read:
(dips = PC has been turned on, peaks = PC has been turned off).
Antonio I8IOV
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Well, the 1992, at least mine, is sensitive to rapid changes of the ambient
temperature, while ignores quite well the slow changes such as those due to the
cycling of the heating system of the house (which is well evident in the
recorded temperature of the LPRO heatsink).
And I see that the
dan...@verizon.net wrote:
The best crystals for room temperature use are around 4 MHz with
temperature inflections around 20C, and this is what was used in an
early Braun alarm clock I had which also had this kind of performance.
Long gone, alas.
and this is what the clock of my old german
As a contribution to this discussion, I attach a 17-day trace recorded with one
of my 1992s on Feb 2008. The counter was counting a LPRO Rb. The test started
from cold for both sets. Gate time was 10 sec.
The 1992 is the 02M/04E military.
Antonio I8IOV
attachment: racal1992.JPG
From jim77...@gmail.com, Oct 15, 2011, 23.46
http://nbcu.mo2do.net/s/18488/29?itemId=tag:dvice.com,2011://3.
83661fullPageURL=/archives/2011/10/speedy-neutrino.php
Comments please!
I'm a bit confused. While I may figure what the reference frame of a single
GPS satellite is, I wonder what is
From mi...@flatsurface.com, Oct 16,2011, 01.50
At 05:46 PM 10/15/2011, Jim Palfreyman wrote...
http://nbcu.mo2do.net/s/18488/29?itemId=tag:dvice.com,2011://3.
83661fullPageURL=/archives/2011/10/speedy-neutrino.php
Comments please!
What an annoying website.
Here's a better source, without
Well, the title of the paper is Times of Flight between a Source and a
Detector observed from a GPS satelite. From a single GPS satellite? Does
this
make any sense?
Antonio I8IOV
And further, what the author states, in other words, would mean that the two
clocks at Earth, in the frame in
Unless I'm missing something, it seems to me that this matter has not yet been
discussed among time-nuts:
http://futureofutc.org
From the above website:
A conclusive proposal to fundamentally redefine UTC is scheduled for a vote by
the Radiocommunications Assembly of the ITU-R in January, 2012.
Da: jherr...@hvsistemas.es
Data: 15/07/2011 1.06
A: Discussion of precise time and frequency measurementtime-nuts@febo.com
Ogg: Re: [time-nuts] The future of UTC
With Bulletin C nr 42, a link to a questionnarie about it is added at
the end (and I think that leap seconds and its convenience or
See also
http://www.bootdisk.com/usb.htm
I've used it extensively for long under native MS DOS 6.22 to connect pen-
disks. Surely worked with USB ports 1.1, but I don't recall whether or not I
did tests with USB 2.0
Antonio I8IOV
___
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The link doesn't work. What is a fake-url-for-links ?
Antonio I8IOV
There is a link to Wikipedia:
http://google-earth-fake-url-for-links.google.com/http%3A%2F%2Fen.wikipedia.
org%2Fwiki%2FKNTH
It's the KNTH AM station.
Jean-Louis
___
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I understand now why most analog wristwatches do tick every two seconds when
the battery is low. I believed the logic used this trick to signal low battery.
Antonio I8IOV
Analog quartz clocks may be used as slave clocks.
You do not even have to disconnect the quartz movement.
Just find the coil
Michael wrote:
You are right, the right value for the crystal would be about 32859.27, but
I
thought that such a difference could be compensated in the circuitry,
that's
why I omitted the decimals.
before you get into grinding I have a question on your chosen frequency.
It doesn't square
are interested I can try to design the circuit for you, I have
intend to build a Siderial clock
dial for my TBolt.
cheers, Neville Michie
On 17/05/2011, at 7:58 AM, iov...@inwind.it wrote:
Neville,
at present I have not enough skill with micros to solve the problem.
I think I will try modifying a crystal
-
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, May 17, 2011 1:22 AM
Subject: Re: [time-nuts] Sidereal timekeeping
Jim Lux wrote:
On 5/16/11 2:58 PM, iov...@inwind.it wrote:
Neville,
at present I
The background of my request is an OT story. Just to mention briefly, I already
have an ordinary (non-radio-controlled) clock machine which turns a miniature
torsion balance in a sealed glass vessel. It runs on a single AA battery. No
extreme accuracy needed. I wont to modify the rate to
Neville,
at present I have not enough skill with micros to solve the problem.
I think I will try modifying a crystal. This would not be that difficult using
a lapping sheet or the like. And opening the can would be quite easy using hot
air. This is the fastest way for me, and the device will
Hi all,
does anybody out there have any ideas as where to find a 32859Hz crystal (1/2
that value would be better) to be used to replace 32768 crystals in ordinary
clocks? I think that 32768 crystals cannot be dragged that much. I've already
read the JimLux article somewhere on the web, but I
jim...@earthlink.net wrote:
On 5/15/11 2:22 PM, iov...@inwind.it wrote:
Hi all,
does anybody out there have any ideas as where to find a 32859Hz crystal
(1/2
that value would be better) to be used to replace 32768 crystals in
ordinary
clocks? I think that 32768 crystals cannot be dragged
I think it would not be possible, because the time-nuts server is not a mail
server.
Indeed I don't know what it the best way to search the archive. Any advice
from other members? Is there any possibility to download the whole archive?
Antonio I8IOV
Hello all!
I'm new here. What is the
While sensitivity to g is an usually specified parameter for crystal
oscillators, I've been unable to find any indications for atomic clocks, say
5071A, or more modestly LPRO. Can anybody point me to any source of info on the
subject?
Thanks,
Antonio I8IOV
I think you would mean an automatic correction according to the measured
position,
and not based on a setup parameter (offset to UTC).
It should be noted that time zones are not necessarily defined by meridians,
and in general they do not.
To do automatic corrections you should have mapped
Hi all,
thanks for your comments.
I take from them that the galactic jitter in an oscillator
can't be seen unless one has a long time series (such as I did
with temperature). Too many other causes would mask it, as
some of you have evidenced. Nevertheless it exists, but has
no practical
I had already been reluctant prior to give the link to my curve
(risk of Off-Topicness), but eventually thought that the curve
could be an useful reference.
Please allow me to conclude, clarifying some points that have
been asked or commented on. This could help you to decide whether
or not
Thanks to all for the very pleasant replies.
Antonio I8IOV
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This evening I happened to hear the nearby church's bell tolling 10 pm, and
thought
that 100+ years ago this could have been the official time of the town,
which
maybe was used by people to set their own clocks (if any). But then I
wondered,
who told the priest what time was it? To what
Hi all,
did anybody out there observe any disturbances in his clocks during (and/or
before or after) the July 11 solar eclipse?
(due to other duties I've been prevented from doing any tests)
Thanks,
Antonio I8IOV
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I was wondering, why we assume that Earth's rotation is slowing down, instead
that clocks are speeding up?
Antonio I8IOV
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iov...@inwind.it
writes:
I was wondering, why we assume that Earth's rotation is slowing
down, instead
that clocks are speeding up?
Because we can measure it relative to the position of very distant
quasars.
I assume you mean use a clock to measure the earth's rotation, using
quasars
Beside the general theoretical considerations as of what answer is more
acceptable (sincerely I agree so far) and what method could be used to solve
the matter, can anybody out there point me please to any article on actual
measurements of the variation rate of the earth's rotational speed,
t...@leapsecond.com wrote:
I was wondering, why we assume that Earth's rotation is slowing down,
instead
that clocks are speeding up?
Antonio I8IOV
Hi Antonio,
snip...
The result of these comparisons show the earth day has
more drift and is less stable than the earth year.
This is
t...@leapsecond.com wrote:
Beside the general theoretical considerations as of what answer is more
acceptable (sincerely I agree so far) and what method could be used to
solve
the matter, can anybody out there point me please to any article on actual
measurements of the variation
bro...@pacific.net wrote:
Hi Antonio:
It turns out that the atmosphere has instabilities that make the
position of a star appear to vary a few arc seconds and that effect is
called seeing.
Because of the seeing you can not use an optical telescope to make a
measurement of the Earth's
I just bought one of these for cheap: National Instruments GPIB-232CV-A
Please tell me that I didn't do something stupid, and that this is
useable for taking data from an HP 5370A.
Joe Gray
W5JG
The NI 232CV-A doesn't use any drivers, it is simply a protocol converter.
Anyway the manual,
at 7:04 AM, iov...@inwind.it iov...@inwind.it wrote:
I just bought one of these for cheap: National Instruments GPIB-232CV-A
Please tell me that I didn't do something stupid, and that this is
useable for taking data from an HP 5370A.
Joe Gray
W5JG
The NI 232CV-A doesn't use any drivers
Yes, it is the R-1051 frequency standard, I have one. It was made by General
Dynamics, and was rated, if I recall, at 1x10E-8 per day.
See also this archive at
http://www.mail-archive.com/time-nuts@febo.com/msg02674.html
Antonio I8IOV
Messaggio originale
Da: li...@cq.nu
Data:
5370B.
I understand that it was a 5370A factory upgraded to B, and I'm wondering if
such an upgrade might have
been requested by the customer (Digital in the case) and why, or the item was
a resurfaced old stock, just
sold after the upgrade.
Any idea?
Messaggio originale
Da: iov...@inwind.it
I apologize for having left some unwanted quoted text in my previous post.
Antonio I8IOV
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Thank you all for your support and suggestions. I did get in touch with
Bob and he is sending me another one. I agree, he is great to deal with.
I popped the cover off the unit and in fact found R215 open. It is a
1208 283KOhm itsy bitsy tiny dude, and there are even tinier dudes and
I had exactly the same symptom on one of my units: a comparator circuit fails
to detect the passing
of the sweept voltage over the upper treshold of about 12.5V. The problem was
R215 on the bottom face of the pcb, 100K.
Sometimes it is not a matter of budget, at least in my case, and trying to
Hi Bill,
thanks for reporting.
The only other report that I've received off list also shows
no noticeable effects. And here at my end no effects as well.
I will post a brief note when I receive the pendulum reports
from my friends in the Maldives.
Cheers,
Antonio I8IOV
Here in Minnesota, at
Hi Magnus,
temperature data will be welcome, of course. I didn't ask for them in order to
keep my request simple, with the hope to get more answers.
Anyway I would be pleased to see as many traces as possible, even in the lack
of temperature data, and without the claim to draw any conclusion,
As far as I know, the LPRO complete schematic diagram is not publicly available
anywhere. I'm looking for it since a while.
Antonio I8IOV
Hello Alfredo -
see Didier Juges' manuals page:
http://www.ko4bb.com/cgi-bin/manuals.pl?
dir=05%29_GPS_Timing/Datum/LPRO
Regards,
Peter
2010/1/13
Time-nuts,
many of you are routinely recording - or may easily do it - the
trace
of the control voltage of non-free-running crystal oscillators
(disciplined by atomic resonance or GPS).
Once again I'm here asking you to
keep an open eye during a solar
eclipse, which will occur on January
You could (temporarily) install a structure that blocks reception in one
direction and then infer the meridian direction from the occultation of
SVs by the obstruction.
However the accuracy of the determination wont be high.
Bruce
Anyway, that's an idea.
Antonio
The
Thanks all.
The conclusion seems to be that an ordinary and stationary GPS receiver with a
single
omnidiretional antenna knows very well where satellites are relative to the
true North,
and where the true North is relative to satellites, but doesn't know (more
precisely:
can't indicate, as
iov...@inwind.it wrote:
Thanks all.
The conclusion seems to be that an ordinary and stationary GPS receiver
with a single
omnidiretional antenna knows very well where satellites are relative to the
true North,
and where the true North is relative to satellites, but doesn't know
Does a stationary (not in motion) GPS receiver know where the North is?
As far
as I can understand, it doesn't, isn't it?
Antonio I8IOV
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rbarri...@msn.com wrote:
Date: 26/10/2009 7.54
Yes, everything I've seen
points me to think that the oscillator runs at 140Mhz and not 70. ...
Please, come back to us when you measure the exciter frequency on your LPRO,
thank you.
Roberto,
I've done the check. Please excuse me for the
Roberto Barrios wrote:
- 10Mhz out swings between 10.000191 and 9.999875,
taking 40s to go up and 60s to go down in freq.
Roberto,
please tell me, does the 10 MHz output swing continuously
between the lower and upper limits, or does it stop at the
lower or upper limit after one or two
I think you are reading the second harmonic.
I would recall that:
- the LPRO loses lock if the lamp gets too hot. This is
indicated by a color more close to red than to pink (which is
normal). This could happen if the temperature control circuit
has some fault. I would suggest cheching the
I have two 1992, and actually one has to terminate the output to see the real
waveform.
They have both the 04E option, that I believe is a nice one. In long term
measurements, I've found that mine have an aging rate in the range of 1x10E-10
per day, or better (compared to Rb). The crystal is
In my experience limited to two units, the 04E works very well, and I've been
prudent claiming an aging of one part in 10E10 per day. I suggest to check your
unit. My reference was Rb (LPRO). They are both 02M.
The 02M has a tag on the left side looking from the front. If the tag was lost,
Thanks, Harry, I already had got this info from this list, but had trouble
locating the jumper. The manuals seemed ambiguous, and I didn't find anyone who
actually made the change. May you help? Anyway, now my programs are MATE/CIIL
...
Antonio I8IOV
You can switch the mode to standard
I think this series is not the one used on 1992, but on racal receivers and
exciters. I have some, and they look different. They have a 5 MHz output, while
the 04E is rated at 10 MHz, even if the crystal is cut for 5 MHz.
Antonio I8IOV
Hi Alan,
Small attachments seem to be okay. Let's
I will try next week.
Good night,
Antonio I8IOV
Harry Hindriks wrote:
You can switch the mode to standard language instead of MATE/CIIL by
changing a jumper inside the counter.
There is an option jumper on the GPIB board labeled SK4. I moved the
suitcase jumper from the lower position to
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